# A321614 (b-file synthesized from sequence entry) 0 1 1 4 2 23 3 106 4 473 5 1939 6 7618 7 28703 8 105112 9 375597 10 1316944 11 4544124 12 15474559 13 52108212 14 173799309 15 574908646 16 1888125243 17 6162032375 18 19998659760 19 64584817367 20 207655073310 21 665017743665